import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import GoodsList from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'


Vue.use(VueRouter)

const routes = [
  {
    //重定位
    path: '/',
    redirect: '/login'
  },
  {
    path: '/login',
    name: 'Login',
    component: Login
  },
  {
    path: '/home',
    name: 'Home',
    component: Home,
    redirect: '/welcome',
    children: [
      { path: '/welcome', component: Welcome },
      { path: '/users', component: Users },
      { path: '/rights', component: Rights },
      { path: '/roles', component: Roles },
      { path: '/categories', component: Cate },
      { path: '/params', component: Params },
      { path: '/goods', component: GoodsList },
      { path: '/goods/add', component: Add }
    ]
  },
]

const router = new VueRouter({
  mode: 'history',
  base: process.env.BASE_URL,
  routes
})


//挂载路由导航守卫
router.beforeEach((to, from, next) => {
  //to 将要访问的路径
  //from 代表从那个路径跳转而来
  //next()放行   next('/login')强制跳转

  if (to.path === '/login') return next()
  //保存token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('./login')
  next()
})

export default router
